The POV ACG20 is a unique wearable camcorder and polarized sunglass combination. The sunglasses are sleek and stylish weighing only 1.3 ounces. A 3 megapixel pinhole CMOS video camera is housed in the sunglass frame and features a 72 degree wide angle lens. Video is recorded at 30 frames per second in AVI video format with a resolution of 640 x 480. The ACG20 also records audio with the built in microphone. The 4GB of onboard memory will record approximately 2 to 3 hours of the action. A micro SD slot can add up to 8G of memory (card Not included). The built-in lithium battery will provide between 2-3 hours of recording time. To view your action, simply plug the unit into a computer with a USB (cable included). It’s as simple as that - no additional software or drivers needed! The ACG20 includes a case, a charger, lens cleaning cloth and USB cord. They are water and sweat resistant. The ACG20 is compatible with Win98, WinME, WinXP, Win2000, Vista, Win 7, and MAC.